Nascar Roush Yates small block Ford CGI Windsor style Block D3 Cylinder Head Stud complete set, fine thread 7/16 & correct 12 point Nuts in excellent usable condition, mileage out at their Nascar engine shop, with significant usable, racing life!These are hard to come by and very expensive new. These fit the Ford CGI, compacted graphite iron, block with fine 7/16 thread on each end. They measure, 7.725" x10 and 6.470" x10, but can be used on several other Ford style race blocks.

Thanks for looking;

Craig